Annotation Type JsonDeserialize


  • @Target({METHOD,FIELD,TYPE,PARAMETER})
    @Retention(RUNTIME)
    public @interface JsonDeserialize
    Annotation use for configuring deserialization aspects, by attaching to "setter" methods or fields, or to value classes. When annotating value classes, configuration is used for instances of the value class but can be overridden by more specific annotations (ones that attach to methods or fields).

    An example annotation would be:

      @JsonDeserialize(using=MySerializer.class,
        as=MyHashMap.class,
        keyAs=MyHashKey.class,
        contentAs=MyHashValue.class
      )
    

    NOTE: since version 1.2, annotation has also been applicable to (constructor) parameters

    Since:
    1.1
    • Optional Element Summary

      Optional Elements 
      Modifier and Type Optional Element Description
      Class<?> as
      Concrete type to deserialize values as, instead of type otherwise declared.
      Class<?> contentAs
      Concrete type to deserialize content (elements of a Collection/array, values of Maps) values as, instead of type otherwise declared.
      Class<? extends JsonDeserializer<?>> contentUsing
      Deserializer class to use for deserializing contents (elements of a Collection/array, values of Maps) of annotated property.
      Class<?> keyAs
      Concrete type to deserialize keys of Map as, instead of type otherwise declared.
      Class<? extends KeyDeserializer> keyUsing
      Deserializer class to use for deserializing Map keys of annotated property.
      Class<? extends JsonDeserializer<?>> using
      Deserializer class to use for deserializing associated value.
    • Element Detail

      • using

        Class<? extends JsonDeserializer<?>> using
        Deserializer class to use for deserializing associated value. Depending on what is annotated, value is either an instance of annotated class (used globablly anywhere where class deserializer is needed); or only used for deserializing property access via a setter method.
        Default:
        org.codehaus.jackson.map.JsonDeserializer.None.class
      • contentUsing

        Class<? extends JsonDeserializer<?>> contentUsing
        Deserializer class to use for deserializing contents (elements of a Collection/array, values of Maps) of annotated property. Can only be used on instances (methods, fields, constructors), and not value classes themselves.
        Since:
        1.3
        Default:
        org.codehaus.jackson.map.JsonDeserializer.None.class
      • keyUsing

        Class<? extends KeyDeserializer> keyUsing
        Deserializer class to use for deserializing Map keys of annotated property. Can only be used on instances (methods, fields, constructors), and not value classes themselves.
        Since:
        1.3
        Default:
        org.codehaus.jackson.map.KeyDeserializer.None.class
      • as

        Class<?> as
        Concrete type to deserialize values as, instead of type otherwise declared. Must be a subtype of declared type; otherwise an exception may be thrown by deserializer.

        Bogus type NoClass can be used to indicate that declared type is used as is (i.e. this annotation property has no setting); this since annotation properties are not allowed to have null value.

        Note: if using() is also used it has precedence (since it directly specified deserializer, whereas this would only be used to locate the deserializer) and value of this annotation property is ignored.

        Default:
        org.codehaus.jackson.map.annotate.NoClass.class
      • keyAs

        Class<?> keyAs
        Concrete type to deserialize keys of Map as, instead of type otherwise declared. Must be a subtype of declared type; otherwise an exception may be thrown by deserializer.
        Default:
        org.codehaus.jackson.map.annotate.NoClass.class
      • contentAs

        Class<?> contentAs
        Concrete type to deserialize content (elements of a Collection/array, values of Maps) values as, instead of type otherwise declared. Must be a subtype of declared type; otherwise an exception may be thrown by deserializer.
        Default:
        org.codehaus.jackson.map.annotate.NoClass.class